• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SE1050175A1
    申请号:SE1050175
    申请日:2010-02-24
    公开日:2011-08-25
    发明作者:Anders Hellgren
    申请人:Cargotec Sweden Ab；
    IPC主号:
    专利说明:

    15 20 25 30 35 locking pins. The rotational positions of the locking pins are typically monitored by means of sensors or position switches, which control the drive of the cylinder.
    However, the sensor-controlled drive of the rotational movements of the locking pins entails a risk of inaccurate positioning of the locking pins in locking and unlocking positions. Dirt deposition, wear and play during assembly, or interference with sensors or control signals, are factors that can eventually cause the end positions of the locking pins to be displaced in locking and unlocking positions, with the risk that the safety of the connection between lifting yoke and container deteriorates.
    THE INVENTION IN BRIEF The present invention aims to eliminate this risk. To this end, the present invention provides a device by which the locking and unlocking positions of the locking pins are absolutely and mechanically determined.
    More particularly, the present invention provides a container lifting yoke comprising locking pins which are insertable into seats arranged in the corners of a container and by rotation about their longitudinal axis are brought into a locking engagement with the container, the locking pins being paired to a common drive for their simultaneous rotation between locking and unlocking positions, which drive comprises a reversible motor and a power transmission which includes a respective link arm, one end of which is articulated to a locking pin and the other end of which is articulated to a carrier included in the power transmission in such a way that the driver's driven movement via the link arms is converted to a rotational movement of the locking pins. The carrier consists of a pivot arm supported on a pivot shaft which is assigned fixed stops which mechanically limit the movement of the carrier arm within an angular range which is determined by the intermediate angular distance of the stops. In this way, the fixed stops provide an absolute determination of the locking and unlocking positions of the locking pins.
    The fixed stops can be designed in various alternative ways to limit the pivoting movement of the carrier arm. In a preferred embodiment due to its compact design, the stops are formed on the outside of a gear housing which houses an angular gear included in the power transmission. More particularly, a preferred embodiment of the invention comprises that between the carrier arm and the motor a power transmission is operatively coupled and arranged with an input shaft coupled to the motor having an external thread and an output shaft supporting a carrier arm likewise with an external thread, which shafts in threaded engagement form an angular gear bearing in a gear housing, the stops being arranged on the outside of the gear housing.
    The stops are suitably designed as support surfaces on at least one lug projecting from the gear housing, against which support surfaces the carrier arm is alternately brought into contact in the locking and unlocking positions of the locking pins. The lug can advantageously be integrally formed in a part of the gear housing formed by casting.
    In a preferred embodiment, the carrier arm extends on either side of the output shaft projecting from the gear housing, two diametrically opposite lugs each having two support surfaces being located on either side of the output shaft, so that the carrier arm is simultaneously brought into contact with a respective support surface of each the heel. In this embodiment, the shaft and the shaft bearings in the gear housing are spared by the load on the shaft acting in opposite directions.
    In the number of applications it can be envisaged that the desired rotational movement of the locking pins can be provided if the support surfaces are arranged with an intermediate angular distance of the order of 75-150 °, and at least with an angular distance of 85-95 °.
    In the case of a hydraulically driven motor, in a manner known per se, a pressure monitoring can be inserted in the hydraulic circuit, and effective to control the flow to the motor via directional valves. In the case of an electrically driven motor, a current monitor can similarly be inserted in the motor's power supply circuit, and operative to control the supply of the motor via switches. For environmental reasons, it is preferred that an electric motor be used in the invention.
    In both cases the angular gear can be designed with a self-braking threaded engagement in such a way that a rotation of the input shaft results in a rotation of the output shaft and the drive arm, while the reverse is prevented by the self-braking threaded engagement. With this design of the power transmission, no additional active locking of the locking pins in their locking position is required. In order to protect the motor, in the force transmission between the motor and the carrier arm, a releasable connection can be arranged which is triggered during external application by an abnormal torque on the output shaft. In this preferred embodiment, the engine, power transmission or gearbox are prevented from being damaged, which could otherwise occur as a result of an unforeseen accident, such as a collision or due to other incorrect handling.
    The releasable connection is suitably arranged between the output shaft and a gear ring supported concentrically on the shaft. In a preferred embodiment, the releasable connection is arranged between the output shaft and a gear ring supported concentrically with the shaft which is included in the self-braking angle gear. In an alternative embodiment, the releasable connection can be arranged between the output shaft and the carrier arm rotatably supported on the shaft. In both cases, the motor is isolated from a destructive force that causes a twist of the locking pins. In the latter case, the bevel gear is also isolated from such a destructive force.
    The releasable connection may in one embodiment comprise a shearable pin or breaking element which in the unbroken state keeps the ring gear rotatably fixed on the output shaft. More preferably, the releasable connection is arranged in the form of a slip clutch which, under normal operating conditions and up to a predetermined torque, fixes the gear ring rotationally fixed to the output shaft by frictional force. In this preferred embodiment, the slip coupling can advantageously comprise a wedge ring displaceable on the output shaft, which is adjustable with adjustable force against a conical inside of the ring gear.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail below with reference to an exemplary embodiment described in detail, and with reference to the accompanying, schematically drawn drawings. In the drawings, Fig. 1 shows the storage of a locking pin in a broken-away portion of a cross-beam connection to a longitudinal beam in a container lifting yoke; Fig. 2 shows a drive unit for the rotation of the locking pin between locking and unlocking positions, in a broken-away portion of the cross beam of Fig. 1, and Fig. 3 a cross-section through the drive unit of Fig. 2.
    DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT The general structure and function of a typical container lifting yoke is notoriously known to those skilled in the art and therefore need not be described in more detail.
    The same also applies to the locking pin discussed here, which for the purposes of the invention may have conventional and known basic features. In the broken away view of Fig. 1, the outer end of a longitudinal beam 1 included in a container lifting yoke is shown, to which a cross beam 2 connects in a orthogonal relationship. At the end of the longitudinal beam, a locking pin 3 is mounted and rotatable between locking and unlocking positions, which typically differ by an angular distance of 90 degrees. A head 4 at the end of the locking pin is designed to engage a corner bracket or seat in a container in a known manner. An arm 5 extends radially from the locking pin, to which a link arm 6 is hingedly connected.
    The rotational movement of the locking pin is transmitted via the link arm 6 from a drive unit 7 shown in Figs. 2 and 3. Reference numerals 8 and 9 denote position sensors, the primary function of which in the invention is to confirm the position of the locking pin pin for the container lift operator. In the opposite corner of the container lift, a second locking pin is arranged in a corresponding manner.
    Referring to Fig. 2, the drive unit for the rotational movement of the locking pins is shown in a broken away section of the cross beam 2, here depicted in the same viewing direction as in Fig. 1 and thus viewed in the longitudinal direction of the container lift yoke. The drive unit comprises a motor 10 whose output shaft protrudes into a gear housing 1 1. The motor and gear housing are connected to a mounting plate 12 with which the drive unit can be mounted on the crossbeam so that the gear housing fits into an opening formed in the upper side of the crossbeam. On the outside of the gearbox housing, two lugs 13 are formed which protrude a distance from the surface of the gearbox housing. The lugs 13 are located in diametrically opposite positions on either side of a shaft 14 emanating from the gear housing. A carrier 15 is rotatably supported on the output shaft, for example by means of a spline connection. The carrier 15 is shaped like an arm and is in its free end 10 articulated connected to the link arms 6 which run in the longitudinal direction of the crossbeam to the locking pins in the corner of the container lifting yoke.
    The lugs 13 are circular sector-shaped and have support surfaces 16 and 17 running substantially tangentially to the shaft 14 which co-operate to form mechanical abutments in pairs which limit the movement of the carrier arm 15 within the angular range determined by the mutual angular distances of the support surfaces. The lugs 13 in this way limit the length of movement of the link arms in the longitudinal direction of the crossbeam, and provide an absolute determination of the locking and unlocking positions / turning positions of the locking pins. It will be appreciated that the invention may be realized in the form of only two support surfaces 16-16 or 17-17 which individually support the carrier arm in the respective position. It will also be appreciated that the pair of cooperating support surfaces of the exemplary embodiment provide an appropriate force distribution in conjunction with a carrier arm 15 extending beyond the output shaft 14, as in the illustrated and preferred embodiment.
    Based on the above, it is a professional measure to dimension the length and pivoting movement of the carrier frame based on the required stroke of the link arms 6. It can be foreseen that for most applications it is sufficient and suitable that the intermediate angle α between opposite support surfaces 16-16 and 17-17, respectively, amounts to the order of 75-150 °, and at least amounts to 85-95 °.
    The drive unit preferably includes an electric induction motor 10 with reversible direction of rotation. In order to protect the motor against overload when the drive arm abuts against the lugs 13, the current consumption of the motor can be monitored in a known manner and the power supply to the motor is controlled as a result of a registered peak in the power consumption.
    To protect the motor against mechanical loads and forces transmitted via locking pins and link arms, the drive unit preferably comprises a self-braking angular gear in the power transmission between the motor 10 and the output shaft 14.
    Referring to Fig. 3, the power transmission is shown in a cross section through the gear housing 11 along the line III-III in Fig. 2. On the shaft 18 coming from the engine is arranged a gear ring 19 which is in operative engagement with a gear ring 20 arranged on the shaft 14 emanating from the gear housing 11, which is mounted at an angle to the input shaft 18. The shafts 18 and 14 with associated gear rings 19 and 20, respectively, in other words form an angular gear. The pitch of the teeth of the gear rings 19 and 20 is chosen so as to provide a self-braking gear grip, whereby a rotation of the input shaft 18 results in a rotation of the output shaft 14, while the reverse is prevented by the self-braking threaded grip.
    By this embodiment of the power transmission, it is effective for fixing the locking pins in their set positions, which can thereby only be actuated by activating the motor, while a force applied to the locking pins from the outside is absorbed in the self-braking angular gear.
    It will be appreciated that in the event of a strong collision between a locking pin and a surrounding object, a torque may be transmitted to the output shaft 14, via link arm and driver, which may cause deformation of the components of the bevel gear.
    In order to eliminate this risk, it is further indicated according to the invention that in the power transmission between motor and carrier a releasable connection is arranged which is triggered during external application by an abnormally high torque on the output shaft 14.
    In the exemplary embodiment, the releasable connection is realized in that the gear shaft 20 of the output shaft is fixedly fixed to the shaft during normal operation by a slip coupling, and according to the preferred embodiment more specifically by means of a conical ring or wedge ring 21 which is inserted between the shaft 14 .
    The conical ring 21 has a conical outside which can be pressed into engagement by friction with a conical inside of the ring gear 20. The conical ring 21 can in itself be rotatably supported on the shaft 14 by means of a corresponding engagement by friction, or in another way such as by means of a wedge and a wedge groove, or by a spline connection or the like. A rotatable locking ring 22, which is in threaded engagement with the shaft 14, is operative for adjustable attachment of the conical ring 21 to the ring gear 20 in cooperation with a ring 23 fixed to the shaft, acting as an abutment for the gear ring 20 when applying the conical ring 2. 1. 10 15 20 25 ADVANTAGES AND POSSIBLE MODIFICATIONS OF THE INVENTION It will be appreciated that the self-locking bevel gear eliminates the need for an additional locking function for fixing the locking pins in their set rotational positions.
    However, the invention does not exclude that the locking pins can still be assigned a separate latch.
    It is further understood that the releasable connection serves as a slip clutch which spares power transmission and motor when applied from the outside by an abnormally high torque on the output shaft of the bevel gear.
    In alternatives to the preferred slip coupling, a releasable connection between the output shaft and its ring gear can be made by means of replaceable breaking elements with a breaking strength below the breaking strength of the gear rings and the ability to resist deformation.
    It should also be understood, without this being particularly shown in the drawings, that the releasable connection may be arranged outside the gear housing, and in particular between the output shaft and the carrier arm supported thereon.
    The invention is defined in the appended claims, of which subordinate claims specify alternative and advantageous embodiments of the solution specified in the main claim.
    权利要求:
    Claims (13)
    [1]
    Container lifting yoke comprising locking pins (3,4) which are insertable into seats arranged in the corners of a container and by rotation about their longitudinal axis are brought into a locking engagement with the container, the locking pins being assigned in pairs a common drive (7) for their simultaneous rotation between locking and unlocking positions, the drive comprising a reversible motor (10) and a power transmission which includes a respective link arm (6) one end of which is articulated to a locking pin (3,4) and the other end of which is articulated to a carrier (15) included in the power transmission in such a way that the driven movement of the carrier via the link arms is converted into a rotational movement of the locking pins, characterized in that the carrier is a pivot arm (15) supported on a rotary shaft (14) which is assigned fixed stops (16; 17) which mechanically limits the movement of the carrier arm within an angular range (a) determined by the intermediate angular distance of the stops, which stops are provided in this way contains absolute determination of the locking and unlocking positions of the locking pins.
    [2]
    Container lifting yoke according to claim 1, characterized in that between the carrier arm and the engine a power transmission is operatively coupled and arranged with a motor-driven input shaft (18) with an external thread (19) and an output shaft (14) supporting the carrier arm as well as a external thread (20), which shafts in threaded engagement form an angular gear bearing in a gear housing (11), the stops (16; 17) being arranged on the outside of the gear housing.
    [3]
    Container lifting yoke according to claim 2, characterized in that the stops are designed as support surfaces (16; 17) on a lug (13) projecting from the gear housing, against which support surfaces the carrier arm is alternately brought into contact in the locking and unlocking positions of the locking pins.
    [4]
    Container lifting yoke according to claim 3, characterized in that the carrier arm extends on either side of the output shaft (14) projecting from the gear housing, and two lugs (13) each having two support surfaces (16, 17) are located on either side of the output shaft. the shaft, the carrier arm being simultaneously brought into contact with a respective support surface of each lug. 10 15 20 25 30 10
    [5]
    Container lifting yoke according to one of the preceding claims, characterized in that the support surfaces (16, 16; 17, 17) are arranged with an intermediate angular distance of the order of 75-150 °, and at least with an angular distance of 85-95 °.
    [6]
    Container lifting yoke according to one of Claims 2 to 5, characterized in that the bevel gear is designed with a self-braking threaded engagement in such a way that a rotation of the input shaft (18) results in a rotation of the output shaft (14) and the carrier arm (15). , while the reverse is prevented by the self-inhibiting thread action.
    [7]
    Container lifting yoke according to Claim 6, characterized in that a releasable connection is arranged in the power transmission between the engine and the carrier arm, which is released when an abnormal torque on the output shaft (14) is applied from the outside.
    [8]
    Container lifting yoke according to Claim 7, characterized in that the releasable connection is arranged between the output shaft (14) and a toothed ring (20) supported concentrically with the shaft and included in the self-braking angle gear.
    [9]
    Container lifting yoke according to Claim 7, characterized in that the releasable connection is arranged between the output shaft (14) and the carrier arm (15) which is rotatably supported on the shaft.
    [10]
    Container lifting yoke according to one of Claims 8 or 9, characterized in that the releasable connection comprises a breaking element which, in the unbroken state, holds the ring gear (20) or the carrier arm (15) rotationally fixed on the output shaft (14).
    [11]
    Container lifting yoke according to one of Claims 7 or 8, characterized in that the releasable connection comprises a slip coupling (20, 21) which, by friction, keeps the ring gear rotatably fixed on the output shaft during normal operation.
    [12]
    Container lifting yoke according to claim 11, characterized in that the friction coupling comprises a wedge ring (21) displaceable on the output shaft which is adjustable with adjustable force against a conical inside of the gear ring (20). 11
    [13]
    Container lifting yoke according to one of the preceding claims, characterized in that the motor (10) is an electric motor.
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    同族专利:
    公开号 | 公开日
    CN102834341B|2014-12-31|
    SE534598C2|2011-10-18|
    SG183297A1|2012-09-27|
    US8556312B2|2013-10-15|
    EP2539268B1|2015-08-05|
    CN102834341A|2012-12-19|
    EP2539268A4|2013-07-10|
    EP2539268A1|2013-01-02|
    WO2011105956A1|2011-09-01|
    US20130200640A1|2013-08-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1763351A|1927-12-06|1930-06-10|Automatic Transp Ation Company|Conveying apparatus|
    US3501193A|1968-02-07|1970-03-17|States Steamship Co|System for engaging cargo containers|
    US3514146A|1968-02-26|1970-05-26|Fruehauf Corp|Extensible lifting spreader|
    US3677599A|1970-11-06|1972-07-18|Vickers Haskins Pty Ltd|Self aligning latching mechanism on a cargo container spreader|
    GB1329687A|1971-02-11|1973-09-12|Stothert & Pitt Ltd|Twistlock device for load handling apparatus|
    SE348441B|1971-05-04|1972-09-04|Asea Ab|
    US3868139A|1974-02-28|1975-02-25|Us Navy|Container handling spreader bar|
    US3892436A|1974-04-11|1975-07-01|Midland Ross Corp|Retractable latch mechanism for cargo container spreaders|
    DE2803935C3|1978-01-30|1980-09-25|Heinrich Plueckhahn Kg Maschinenfabrik, 2000 Hamburg|Hammer head traverse|
    SE420907C|1980-03-26|1983-11-17|Taylor Richard J|WELDING DEVICE BY LIFT CABLE, SPECIFIC TO CONTAINER|
    JPS5930076U|1982-08-17|1984-02-24|
    US4630856A|1985-01-31|1986-12-23|Hyster Company|Twistlock operating mechanism|
    CN2077860U|1990-09-17|1991-05-29|上海港高阳装卸公司|Powerless locking control device for hoist of container|
    JPH0940352A|1995-07-28|1997-02-10|Mitsubishi Heavy Ind Ltd|Container loading machine|
    AU6164100A|1999-07-15|2001-02-05|Gimetsi Oy|System and method for controlling the movements of container handling device|
    DE10140449B4|2001-01-18|2006-01-05|KGW Förder- und Servicetechnik GmbH|lifting device|
    ES2272549T3|2001-10-29|2007-05-01|Kci Konecranes Plc|APPARATUS FOR A BLOCKING UNIT OF AN EXTENSOR FOR CONTAINERS.|
    CN1978306A|2005-11-29|2007-06-13|中国国际海运集装箱股份有限公司|Container sling|
    SE529521C2|2006-01-18|2007-09-04|Bromma Conquip Ab|Flipper Arms Drive|
    EP1847504B1|2006-04-20|2012-03-07|Bromma Conquip Ab|Synchronization of spreader twist-locks in twin lift operations|
    CN101200266B|2007-12-06|2010-06-16|三一重工股份有限公司|Automatic rotary-locking device for container sling|SE534597C2|2010-02-24|2011-10-18|Cargotec Sweden Ab|Container lift tow with collision protected drive of telescopic movement at the container lift tow beams|
    FR2986498B1|2012-02-03|2014-02-14|Thales Sa|NAVIGANT ENGINE RECEIVING ASSEMBLY AND SYSTEM FOR RECOVERING AND DEPLOYING TO THE SEA OF SUCH AN EQUIPMENT|
    US10093521B2|2016-04-27|2018-10-09|Greenfield Products Llc|Barge lid lifter system and method|
    CN113776570B|2021-11-15|2022-02-18|山东鱼台东源矿用设备有限责任公司|Protection device for mining machinery sensor|
    法律状态:
    2015-02-17| OPRJ| Opposition rejected|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050175A|SE534598C2|2010-02-24|2010-02-24|Container hoist with absolute positioning of locking pins|SE1050175A| SE534598C2|2010-02-24|2010-02-24|Container hoist with absolute positioning of locking pins|
    CN201180010729.1A| CN102834341B|2010-02-24|2011-02-22|Container-lifting spreader with absolute positioning of twist-locks|
    PCT/SE2011/050195| WO2011105956A1|2010-02-24|2011-02-22|Container-lifting spreader with absolute positioning of twist-locks|
    SG2012059879A| SG183297A1|2010-02-24|2011-02-22|Container-lifting spreader with absolute positioning of twist-locks|
    US13/580,554| US8556312B2|2010-02-24|2011-02-22|Container-lifting spreader with drive for the telescopic movement of spreader's beams protected against damage by collision|
    EP11747793.5A| EP2539268B1|2010-02-24|2011-02-22|Container-lifting spreader with absolute positioning of twist-locks|
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